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Do children with Williams syndrome really have good vocabulary knowledge? Methods for comparing cognitive and linguistic abilities in developmental disorders

Brock, Jon, Jarrold, Christopher, Farran, Emily K., Laws, Glynis and Riby, Deborah M. (2007) Do children with Williams syndrome really have good vocabulary knowledge? Methods for comparing cognitive and linguistic abilities in developmental disorders CLINICAL LINGUISTICS & PHONETICS, 21 (9). pp. 673-688.

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Abstract

The comparison of cognitive and linguistic skills in individuals with developmental disorders is fraught with methodological and psychometric difficulties. In this paper, we illustrate some of these issues by comparing the receptive vocabulary knowledge and non‐verbal reasoning abilities of 41 children with Williams syndrome, a genetic disorder in which language abilities are often claimed to be relatively strong. Data from this group were compared with data from typically developing children, children with Down syndrome, and children with non‐specific learning difficulties using a number of approaches including comparison of age‐equivalent scores, matching, analysis of covariance, and regression‐based standardization. Across these analyses children with Williams syndrome consistently demonstrated relatively good receptive vocabulary knowledge, although this effect appeared strongest in the oldest children.

Item Type: Article
Divisions : Faculty of Health and Medical Sciences > School of Psychology
Authors :
NameEmailORCID
Brock, Jon
Jarrold, Christopher
Farran, Emily K.e.farran@surrey.ac.uk
Laws, Glynis
Riby, Deborah M.
Date : 1 January 2007
DOI : 10.1080/02699200701541433
Copyright Disclaimer : Copyright © 2007 Informa UK Limited
Uncontrolled Keywords : Williams syndrome; Receptive vocabulary; Cognitive skills; Methodology
Depositing User : Diane Maxfield
Date Deposited : 01 Jul 2019 11:07
Last Modified : 01 Jul 2019 11:07
URI: http://epubs.surrey.ac.uk/id/eprint/850250

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